Answer: The maximum allowable tension is a critical design parameter determined by the conductor's ultimate tensile strength (UTS) and a safety factor. The working tension should always be a fraction of the UTS to prevent mechanical failure. Industry standards and guidelines (such as those from CIGRÉ and IEEE) often define this limit. A common practice is to use "Everyday Stress" (EDS), which is the conductor's final tension at a specific temperature (e.g., 16°C) and no wind or ice. CIGRÉ and other organizations have also proposed using the H/w parameter (horizontal tension per unit weight) as a criterion to design against conductor fatigue caused by aeolian vibrations. This parameter is considered a more reliable indicator of fatigue life compared to simply using a percentage of the rated tensile strength.